Mary Ellen invests $4000 in an account that earns 1.8% annual interest compounded monthly. How many years will it take for the balance of this account to reach $6000? Enter your answer rounded to the nearest tenth in the box. yearsA sample originally contains 21 grams of a radioactive isotope. After 45 days, 17.3 grams of the isotope remain in the sample. What is the half-life of the isotope? Enter your answer rounded to the nearest day in the box. daysAn invertible function is represented by the values in the table. -3 -2 -1 2 3 f (x) 4.4 0.6 -0.8 -1 -1.2 -2.6 -6.4 Which graph shows the inverse of this function? O 1414-14 O 4Which graph shows the function f (x) = - In (x+ 1)? O -2 -2 6 7 -1 2 3 O O -1 -3